problem with max date

["Smith, Mike" <Mike_Smith@xxxxxxxxxxxxxxxx>]

I have a scenario where I need to pick this record with the highest YR/MO from a file.
Records are like this

RVYRMO           SCHED
201301                  A
201301                  B
201301                  C
201301                  D
201303                  A
201303                  C
201303                  D

My query doesn't pick up the record

201301                  B

My query looks like this

SELECT RVYRMO , SCHED,
 FROM savectl00  where RVYRMO =  (select    max(RVYRMO) from savectl00 )

My results are

201303                  A
201303                  C
201303                  D


My searching seems to indicate this is how to do it, but I'm not having any luck.

What am I doing wrong?

Thanks

Mike

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